Of particular note is the presence of a sufficient amount of RAM. Windows XP requires 1 GB, OS Windows 7, Vista - 1.5 gigabytes + game due to the large number of graphs requires 300-500 MB of RAM. As a result, you need at least 1.5-2 GB depending on the version of Windows.

NOTE:Before running demo disable UAC in Windows 7, the firewalls, the firewall and antivirus (or add program to exceptions)